The Transport Research Arena (TRA) – Europe 2012 conference took place on 23-26 April 2012 in Athens, Greece with a number of ECTRI supported sessions and events. ECTRI delegates were involved in 4 sessions and more than 120 researchers from 17 ECTRI Members (AIT, BASt, CERTH‐HIT, DLR, DTU, DVS, FhG, Ifsttar, KTI, LNEC, POLITO, SWOV, TNO, TRL, UPM, VTI and VTT) participated as speakers or authors.